bandwidth the amount of data that can be transmitted in a given amount of time, typically expressed as bits per second (bps). download to copy electronic data from another computer to your computer over a network. upload to transfer a file from your computer to another computer. electronic commerce (e-commerce) business conducted online. ...
Read MoreAn HTTP Dialog Part I: User types URL in browser window – http://news.excite.com/odd/ Browser does DNS lookup on host – news.excite.com Browser contacts host via protocol – http: Browser requests the file in the given path: – /odd/ An HTTP Dialog Part II: Server sends requested document back Browser reads it, requests any images or...
Read MoreServers are: On all the time Usually have permanent IP addresses Generally connected to the net “24/7” Good for: – centralization and synchronization – large amounts of data that lots of people want What other reasons are there to centralize information on servers? Clients are: The PC you use Good at real-time interaction – why are...
Read MoreName Servers Every bottom-level domain has at least one local name server – a very busy machine Local name servers know the IP address and name of every machine in their domain Forward requests for unknown names up the pyramid, then back down Local machine caches recently used IP addresses in other domains More Top Level Domains Proposed .store ...
Read MoreUniform Resource Locator The global address of documents and other resources on the World Wide Web. The first part of the address indicates what protocol to use. The second part specifies the IP address or the domain name where the resource is located. Example of an URL: http://www.atozvision.com/index.html Protocol-Domain name-Top level domain IP...
Read MoreWhat is a Website? A site (location) on the World Wide Web. Home page Additional documents and files. Owned and managed by an individual, company or organization. What is a webpage? A document on the World Wide Web. Every Web page is identified by a unique URL (Uniform Resource Locator). Using...
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